Delivered-To: daveyxm@virginmedia.com Received: by 10.50.237.98 with SMTP id vb2csp1832igc; Sun, 2 Mar 2014 09:35:10 -0800 (PST) X-Received: by 10.194.86.233 with SMTP id s9mr11428855wjz.44.1393781709862; Sun, 02 Mar 2014 09:35:09 -0800 (PST) Return-Path: Received: from post.thorcom.com (post.thorcom.com. [195.171.43.25]) by mx.google.com with ESMTP id s8si6857181wic.37.2014.03.02.09.35.09 for ; Sun, 02 Mar 2014 09:35:09 -0800 (PST) Received-SPF: neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) client-ip=195.171.43.25; Authentication-Results: mx.google.com; spf=neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) smtp.mail=owner-rsgb_lf_group@blacksheep.org Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1WKA0L-0000f1-68 for rs_out_1@blacksheep.org; Sun, 02 Mar 2014 17:16:45 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1WKA0K-0000es-Pn for rsgb_lf_group@blacksheep.org; Sun, 02 Mar 2014 17:16:44 +0000 Received: from parrot.netcom.co.uk ([217.72.171.49]) by relay1.thorcom.net with esmtp (Exim 4.82) (envelope-from ) id 1WKA0J-0007k3-4t for rsgb_lf_group@blacksheep.org; Sun, 02 Mar 2014 17:16:43 +0000 Received: from sb.abelian.org (i-194-106-52-83.freedom2surf.net [194.106.52.83]) by parrot.netcom.co.uk (Postfix) with ESMTP id 1E8783273E8 for ; Sun, 2 Mar 2014 17:15:22 +0000 (GMT) Received: from [127.0.0.1] (localhost [127.0.0.1]) by sb.abelian.org (Postfix) with ESMTP id 472BD28A0184 for ; Sun, 2 Mar 2014 17:16:42 +0000 (UTC) Message-ID: <5313677A.2020400@abelian.org> Date: Sun, 02 Mar 2014 17:16:42 +0000 From: Paul Nicholson User-Agent: Mozilla/5.0 (X11; Linux i686; rv:17.0) Gecko/20130106 Thunderbird/17.0.2 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: , In-Reply-To: X-Spam-Score: 0.7 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: > ... QRSS 60 last night. I guessed wrong and Markus suggests a faster spectrogram. This one is in 60 second bins http://abelian.org/vlf/tmp/29499_140302h.gif [...] Content analysis details: (0.7 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [217.72.171.49 listed in list.dnswl.org] 0.7 SPF_NEUTRAL SPF: sender does not match SPF record (neutral) X-Scan-Signature: b77892ad90d0261eaf071f4f6cf31464 Subject: Re: LF: Would slower QRSS help? Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.9 required=5.0 tests=FROM_ENDS_IN_NUMS autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false > ... QRSS 60 last night. I guessed wrong and Markus suggests a faster spectrogram. This one is in 60 second bins http://abelian.org/vlf/tmp/29499_140302h.gif And in 30 second bins http://abelian.org/vlf/tmp/29499_140302i.gif I don't know if it's any more readable but many dots are clear in the 30 second one. > Would slower be of any help for tonight's transmission? Much. For detection at the max possible range send pure carrier. To confirm ID, change frequency at some point, 10 mHz or so, on the hour. For the slow Morse each doubling of dot length would double the brightness of your trace on the spectrogram. 120 should put you in the red and 240 would be well into the yellow. Background noise subsided here from about 04:30 so the S/N improved for the final 2.5 hours of transmission. That appears to be the European window to aim for. -- Paul Nicholson --